21004425452033 has 8 divisors (see below), whose sum is σ = 21010892495040. Its totient is φ = 20997959384880.

The previous prime is 21004425451937. The next prime is 21004425452051. The reversal of 21004425452033 is 33025452440012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21004425452033 - 2⁸ = 21004425451777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21004425451984 and 21004425452002.

It is not an unprimeable number, because it can be changed into a prime (21004425452063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44039603 + ... + 44513991.

It is an arithmetic number, because the mean of its divisors is an integer number (2626361561880).

Almost surely, 2^{21004425452033} is an apocalyptic number.

It is an amenable number.

21004425452033 is a deficient number, since it is larger than the sum of its proper divisors (6467043007).

21004425452033 is an equidigital number, since it uses as much as digits as its factorization.

21004425452033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487927.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 21004425452033 its reverse (33025452440012), we get a palindrome (54029877892045).

The spelling of 21004425452033 in words is "twenty-one trillion, four billion, four hundred twenty-five million, four hundred fifty-two thousand, thirty-three".